A dry shampoo is an excellent item to keep in one’s emergency supplies. Their use requires no water (which may be in short supply after a disaster), they will reduce the risk of getting chilled from wet hair, and cleanliness is a great morale booster! They may also come in handy in the sickroom where, again, chill is of concern and a patient may have difficulty standing or bending over a sink.
Prices are generally within the 5$-15$ range for 4-7 ounces of product. Most are in a can with some type of propellant (though there are a few exceptions) so you will want to store them away from heat sources. There is a huge range of products and you will probably want to try out a few before stocking up. Reviews on amazon, Walmart and other online retailers may help you find the one that best suits your needs.
One can also go the DIY route with one of the recipes below. Apply with a large soft makeup brush. Allow to sit for at least two minutes, then brush out thoroughly with a natural-bristle hairbrush.
Basic Dry Shampoo
¼ cup arrowroot powder or cornstarch
3-4 drops essential oil (for fragrance)
Dry Shampoo for Dark Hair
2 Tablespoons arrowroot powder or cornstarch
2 Tablespoons cocoa powder